Downtown Atlanta: Two Urban Licks: Great food and interesting decor. It is located in an old warehouse.
Concentrics Restaurants
The Varsity: Well, it is an Atlanta tradition. You can get hamburgers, hotdogs, fries, etc...
Buckhead area: High- end restaurants: Blue Pointe: asian flair, Chops: steaks, and Atlanta Fish Market :great fish.
Buckhead Life Restaurant Group
Pizza located all around: Johnny's Pizza, Mellow Mushroom and I will add Avanti's Pizza located on 141 and McGinnis Ferry in the Kroger shopping center. Family owned and very fresh ingredients.(closed as of 5/08)
5 Seasons is also great. Located off of Old Milton Pkwy. on GA 400.
Maggianos or Carrabbas for Italian
Sweet Tomato: Salad and Soups